WO2009103859A1 - Method and device for feeding power to wrist device - Google Patents
Method and device for feeding power to wrist device Download PDFInfo
- Publication number
- WO2009103859A1 WO2009103859A1 PCT/FI2009/050145 FI2009050145W WO2009103859A1 WO 2009103859 A1 WO2009103859 A1 WO 2009103859A1 FI 2009050145 W FI2009050145 W FI 2009050145W WO 2009103859 A1 WO2009103859 A1 WO 2009103859A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery
- battery cell
- energy feed
- battery cells
- wrist
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/238—Flexibility or foldability
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0018—Circuits for equalisation of charge between batteries using separate charge circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the invention relates to a method and device arrangement for feeding power to a wrist device, such as for example a mobile phone, a GPS device, heart rate monitor or the like.
- a wrist device such as for example a mobile phone, a GPS device, heart rate monitor or the like.
- wrist devices with relatively high power consumption can be implemented, which devices nevertheless have small external dimensions and are light weighted.
- a large group of different devices held at the wrist are generally known, which devices have relatively high power consumption.
- wrist computers and wrist watch phones have to be equipped with rechargeable batteries, physical size of which has to be chosen adequate according to high power consumption.
- the efficiency-weight ratio of the batteries has improved, placing the batteries in the device as one piece is difficult.
- the size of one large battery increases the external dimensions and weight of the actual device considerably and the product will easily become of a size that is clumsy.
- Several batteries can in theory be placed in the wrist band of the device. In that case connecting the batteries electrically to each other in an expedient way becomes the problem. If the batteries are connected together from only their terminals, the small differences in terminal voltages of the batteries cause reciprocal currents between the batteries.
- a good example of this is devices held at the wrist, in which the deconcentrated placement of batteries in the wrist band enables smaller size of the device.
- the wrist band becomes rigid at the batteries and the flexibility needed is achieved by joining the batteries with flexible material or through joints to each other. By using several batteries the individual size of a battery can be decreased, whereby the wrist band can be made more flexible and thinner.
- the electrical connecting of the batteries it is the more difficult the larger number of batteries is wanted to be used in the structure. If separate conductors are lead from each battery cell to the charging control in the actual device, a large number of conductors are needed.
- An objective of the device of the invention is to achieve a method and device, with which some of the above mentioned defects can be eliminated and the implementation of the wrist device is solved by placing the batteries in the wrist band. Then the actual device will be of smaller size and the wrist band will also become proportionate in comparison to the actual device. It is possible to implement an adequate volume of the batteries in the device in an inconspicuous way.
- Method and device according to the invention for connecting the battery cells to each other enable a more flexible and advantageous structure of the wrist band both on the point of view of usability and manufacture.
- a varying number of battery cells can be connected and they can vary in size according to needs. Small number of conductors enables a moving and reliable contact surface between battery cells.
- the invention is based on that that own electronics unit, switch component and protection circuit are placed in connection with each battery cell.
- the electronics unit takes care of individual charging of the battery, the switch component connects the bat- tery cell to the voltage feed of the actual device and the protection circuit limits the short circuit current as well as prevents the arise of damages in situations of fault, such as for example in excess or undervoltage.
- Fig. 1 shows a method, in which the energy feed bus is implemented with two conductors, positive and negative,
- Fig. 2 shows a method, in which the energy feed bus is implemented with three conductors, positive, negative and charging voltage,
- Fig. 3 shows a method, in which a connection with its charging circuit unit is implemented with two conductors
- Fig. 4 shows a method, in which a connection with its charging circuit unit is implemented with three conductors
- Fig. 5 shows an application of the invention, a set of batteries implemented as a metal wrist band, and
- Fig. 6 shows an application on how the connecting of the batteries/set of battery cells to the energy feed bus is done in the method according to the invention
- Figs. 1-6 show applications of the method according to the invention, in which are included switch and charging circuits 21 , 22, 23, 24, battery cells 11 , 12, 13, 14 and energy feed bus 31.
- Switch and charging circuit 21 consists of electronics components with the connections between them. The function described here can be implemented also with one electronics component or hybrid circuit.
- Charging circuit 211 measures the voltage of the battery cell and guides power to the battery in a way defined for the battery type. Charging circuit 211 takes also care of that that the battery is not overcharged and lets the battery voltage to rise only to the allowed value. With the help of switch circuit 212 the battery cell is connected to the energy feed bus in a controlled way. When the voltage of the battery is lower than the voltage in the en- ergy feed bus, the battery cell will not be connected nor will it participate to the energy feed in the system.
- this electronics part When the voltage in the energy feed bus decreases so that the voltage is at the most the same as battery cell voltage, the battery cell or set of battery cells will start feeding power through the connection circuit to the energy feed bus and through that to the device/devices connected to it.
- this electronics part also includes a battery protection circuit 213.
- the protection circuit disconnects the bat- tery cell, if it recognises for example the battery voltage rising too high or the battery voltage is getting too low, the current between the battery cell and the energy feed bus becomes too high or in other situations, where the battery cell or the surroundings would be in danger.
- the switch and charg- ing circuit is a little more complicated.
- the electronics part has to then be able to prevent that that the battery cell/set of battery cells with higher battery voltage does not start charging the cell or set of cells with lower battery voltage in usage situation, when it is not meant to charge the battery.
- the lower voltage in the battery or battery cell can be caused by the fact that it is only emptier than the others in a natural way or it is damaged.
- the interspaces between battery cells 11-14 are implemented as flexible or they have mechanical pivoting joints.
- the battery cells can also be connected to a flexible material or there can be flexible material between them. In some embodiments the battery cells can be rigidly fastened to each other.
- the figure shows the connection of four individual battery cells to the energy feed bus, but depending of the application and the energy requirement the number of them can be any.
- the battery cell presented here can be in itself already a unit formed by several battery cells, which is charged and discharged like one cell.
- the energy feed bus 31 between battery units is implemented in an embodiment with slide contacts (not shown) between batteries 11-14.
- conductor/conductors of the bus electrically conductive body of the wrist band can be used.
- conductor instead of the actual cable also a flexible circuit board or other conductive material can be used.
- the unbroken batteries feed energy to the energy feed bus 31 and trough it to the connected device.
- the charging circuit recognises the bad battery cell or set of battery cells and does not charge it with full capacity.
- the energy feed bus 31 can run in two directions from the wrist device, which energy feed bus can both have one or several battery cells 11-14. In an advanta- geous application only one energy feed bus 31 runs from the wrist device, whereby it is for example easier to seal the device.
- the method for charging and discharging energy from battery cells 11-14, that are placed string-like to wrist band, belt or the like functions as follows.
- the battery cells are charged through the energy feed bus 31 , whereby the switch and charg- ing circuit 21-24 of each battery regulates the charging voltage of each battery.
- the charging circuits control the magnitude of charging current, detect the levels of terminal voltages of batteries and the magnitudes of currents. Due to the regulation each battery can be charged as full as possible.
- the circuits 21-24 control the discharge of the bat- teries so, that they discharge as evenly as possible. Then the electrical energy stored can be utilised comprehensively.
- Battery arrangement according to the method enables the maximal usage of battery capacity, which is especially important when small sized batteries are in question.
- a set of battery cells equipped with effective control can be sized small in volume and weight, whereby the relative charging capacity of batteries increases.
- Fig. 5 shows an application of the invention, set of batteries 52 implemented as a metal wrist band, in which there are mechanical joints between the battery units and the set of batteries feeds the device 50, which in this case is a wrist watch phone.
- the device 50 which in this case is a wrist watch phone.
- the energy feed bus runs only in one direction from the device. Then the advantage is gained in that the energy feed bus does not need to run to several directions from the actual device, which causes a lead-in or other connection type to the device, which is either more expensive to implement or problematic with regard to sealing.
- the wrist band also other suitable materials instead of metal can be used.
- Fig. 6 shows an application on how the connecting of the batteries/battery cells to the energy feed bus is done in the method according to the invention.
- the energy feed bus can be implemented with the minimum of two conductors.
- the mechanical structure allows, as the conductor/conductors also other mechanical structure can be used, such as for example body structure (not shown in the fig- ure).
- Conductors 311 and 312 of the energy feed bus are indicated in the figure, which conductors have been electrically connected by soldering or by some other means to the electronics unit 215, which includes charging, switch and protection items 210.
- the electronics unit connects to the battery or set of battery cells through electrically conductive connections 41 and 42.
- the energy feed bus can be implemented with flexible materials, such as for example with cables or flexible circuit board.
- the structure can vary with regard to the space in use, for example a battery or a set of battery cells can reside side by side with the electronics unit, whereby a flatter implementation can be achieved.
- Figures and the description accompanying them is meant only to illustrate the present invention. In its details the invention can vary within the limits of the accompanying claims and the inventive idea presented in the description of the invention. It is obvious to the man skilled in the art that the dimensions and detailed solutions may vary according to the application. Further it is obvious to the man skilled in the art that the embodiment of the invention may vary within the limits set by conditions of use, customer needs, series production methods and production solutions introduced in mass production.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980105996XA CN101971454B (en) | 2008-02-22 | 2009-02-23 | Method and device for feeding power to wrist device |
CA2722527A CA2722527A1 (en) | 2008-02-22 | 2009-02-23 | Method and device for feeding power to wrist device |
EP09712174A EP2255427A1 (en) | 2008-02-22 | 2009-02-23 | Method and device for feeding power to wrist device |
US12/918,845 US20110089903A1 (en) | 2008-02-22 | 2009-02-23 | Method and device for feeding power to wrist device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20080149A FI121983B (en) | 2008-02-22 | 2008-02-22 | Method and arrangement for supplying power to a wristband device |
FI20080149 | 2008-02-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009103859A1 true WO2009103859A1 (en) | 2009-08-27 |
Family
ID=39148929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI2009/050145 WO2009103859A1 (en) | 2008-02-22 | 2009-02-23 | Method and device for feeding power to wrist device |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110089903A1 (en) |
EP (1) | EP2255427A1 (en) |
CN (1) | CN101971454B (en) |
CA (1) | CA2722527A1 (en) |
FI (1) | FI121983B (en) |
RU (1) | RU2010139158A (en) |
WO (1) | WO2009103859A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102200585A (en) * | 2011-05-06 | 2011-09-28 | 李钢坤 | Exogenous wrist strap type electronic monitoring terminal |
CN102389300A (en) * | 2011-07-26 | 2012-03-28 | 李钢坤 | Intelligent heart rate locating and monitoring wristwatch with external power supply |
ES2592477A1 (en) * | 2015-05-28 | 2016-11-30 | Computer Science Researchers, S.L. | Belt formed by links with built-in battery (Machine-translation by Google Translate, not legally binding) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI420723B (en) * | 2011-03-25 | 2013-12-21 | Tex Ray Ind Co Ltd | Wearable battery set |
US9463267B2 (en) * | 2011-10-21 | 2016-10-11 | National University Of Singapore | Array of elements and a human-computer interface device |
US9178203B2 (en) * | 2012-02-15 | 2015-11-03 | GM Global Technology Operations LLC | Battery module with a flexible bus |
CN102902196B (en) * | 2012-10-23 | 2015-06-10 | 李嘉睿 | Solar photovoltaic watch with charge and discharge functions |
KR102189784B1 (en) | 2013-08-30 | 2020-12-11 | 삼성전자주식회사 | Flexible electronic device |
CN103762650B (en) * | 2014-01-21 | 2016-01-20 | 深圳市民展科技开发有限公司 | A kind of single USB port stand-by power supply based on equilibrium charging technology |
CN204885265U (en) * | 2015-05-08 | 2015-12-16 | 中兴通讯股份有限公司 | Energy storage connecting band and mobile device |
CN113253592B (en) * | 2016-02-26 | 2022-11-08 | 株式会社半导体能源研究所 | Connecting member, power supply device, electronic apparatus, and system |
KR102164002B1 (en) * | 2016-09-02 | 2020-10-12 | 삼성에스디아이 주식회사 | Band assembly |
US10849392B1 (en) * | 2016-09-20 | 2020-12-01 | Apple Inc. | Battery watch band |
CN106354216A (en) * | 2016-11-18 | 2017-01-25 | 东莞泰克威科技有限公司 | Wrist strap and wearable device applying same |
KR102607016B1 (en) * | 2018-01-31 | 2023-11-29 | 삼성메디슨 주식회사 | Ultrasonic probe |
Citations (6)
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US5695885A (en) * | 1994-10-14 | 1997-12-09 | Texas Instruments Incorporated | External battery and photoyoltaic battery charger |
US5889737A (en) * | 1995-07-05 | 1999-03-30 | Motorola, Inc. | Wrist carried electronic device |
US6377023B1 (en) * | 1999-10-21 | 2002-04-23 | Alcatel | Charging control system for a battery of electric storage cells and in particular a battery of lithium cells |
US20040012371A1 (en) * | 2002-07-22 | 2004-01-22 | Ott William E. | Battery charger |
US20040224223A1 (en) * | 2003-05-07 | 2004-11-11 | Huei-Hsin Sun | Battery in watchband |
US20050017682A1 (en) * | 2003-07-21 | 2005-01-27 | The Boeing Company | Autonomous battery cell balancing system with integrated voltage monitoring |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69423951T2 (en) * | 1993-07-05 | 2000-10-19 | Seiko Epson Corp | ELECTRONIC DEVICE WITH BRACELET |
CN1189899A (en) * | 1995-07-05 | 1998-08-05 | 摩托罗拉公司 | Conformal power supply |
-
2008
- 2008-02-22 FI FI20080149A patent/FI121983B/en not_active IP Right Cessation
-
2009
- 2009-02-23 RU RU2010139158/07A patent/RU2010139158A/en unknown
- 2009-02-23 CA CA2722527A patent/CA2722527A1/en not_active Abandoned
- 2009-02-23 WO PCT/FI2009/050145 patent/WO2009103859A1/en active Application Filing
- 2009-02-23 EP EP09712174A patent/EP2255427A1/en not_active Withdrawn
- 2009-02-23 CN CN200980105996XA patent/CN101971454B/en not_active Expired - Fee Related
- 2009-02-23 US US12/918,845 patent/US20110089903A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5695885A (en) * | 1994-10-14 | 1997-12-09 | Texas Instruments Incorporated | External battery and photoyoltaic battery charger |
US5889737A (en) * | 1995-07-05 | 1999-03-30 | Motorola, Inc. | Wrist carried electronic device |
US6377023B1 (en) * | 1999-10-21 | 2002-04-23 | Alcatel | Charging control system for a battery of electric storage cells and in particular a battery of lithium cells |
US20040012371A1 (en) * | 2002-07-22 | 2004-01-22 | Ott William E. | Battery charger |
US20040224223A1 (en) * | 2003-05-07 | 2004-11-11 | Huei-Hsin Sun | Battery in watchband |
US20050017682A1 (en) * | 2003-07-21 | 2005-01-27 | The Boeing Company | Autonomous battery cell balancing system with integrated voltage monitoring |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102200585A (en) * | 2011-05-06 | 2011-09-28 | 李钢坤 | Exogenous wrist strap type electronic monitoring terminal |
CN102389300A (en) * | 2011-07-26 | 2012-03-28 | 李钢坤 | Intelligent heart rate locating and monitoring wristwatch with external power supply |
ES2592477A1 (en) * | 2015-05-28 | 2016-11-30 | Computer Science Researchers, S.L. | Belt formed by links with built-in battery (Machine-translation by Google Translate, not legally binding) |
Also Published As
Publication number | Publication date |
---|---|
CN101971454B (en) | 2013-10-23 |
FI20080149A0 (en) | 2008-02-22 |
FI20080149A (en) | 2009-08-23 |
EP2255427A1 (en) | 2010-12-01 |
RU2010139158A (en) | 2012-03-27 |
CA2722527A1 (en) | 2009-08-27 |
US20110089903A1 (en) | 2011-04-21 |
FI121983B (en) | 2011-06-30 |
CN101971454A (en) | 2011-02-09 |
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